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Synthesis, Structure and Thermal Properties of Volatile Indium and Gallium Triazenides
Linköping University, Department of Physics, Chemistry and Biology, Chemistry. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0001-9380-4072
Carleton Univ, Canada.
Swedish Univ Agr Sci, Sweden.
Linköping University, Department of Physics, Chemistry and Biology, Chemistry. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0003-3633-9674
2022 (English)In: European Journal of Inorganic Chemistry, ISSN 1434-1948, E-ISSN 1099-1948, no 24, article id e202200161Article in journal (Refereed) Published
Abstract [en]

Indium and gallium nitride are important semi-conductor materials with desirable properties for high-frequency and power electronics. We have previously demonstrated high-quality ALD grown InN and GaN using the hexacoordinated 1,3-diisopropyltriazenide In(III) and Ga(III) precursors. Herein we report the structural and thermal properties their analogues employing combinations of isopropyl, sec-butyl and tert-butyltriazenide alkyl groups on the exocyclic nitrogen of the triazenide ligand. The new triazenide compounds were all found to be volatile (80-120 degrees C, 0.5 mbar) and showed very good thermal stability (200 and 300 degrees C). These new triazenide analogues provide a set of precursors whose thermal properties are determined and can be accordingly tailored by strategic choice of exocyclic nitrogen alkyl substituents.

Place, publisher, year, edition, pages
Wiley-V C H Verlag GMBH , 2022. no 24, article id e202200161
Keywords [en]
Gallium; Indium; Precursors; Triazenides; Volatile
National Category
Inorganic Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-187716DOI: 10.1002/ejic.202200161ISI: 000838273100001Scopus ID: 2-s2.0-85135830965OAI: oai:DiVA.org:liu-187716DiVA, id: diva2:1691196
Note

Funding Agencies|Swedish foundation for Strategic Research [SSF-RMA 15-0018]; Knut and Alice Wallenberg foundation [KAW 2013.0049]

Available from: 2022-08-29 Created: 2022-08-29 Last updated: 2025-09-09Bibliographically approved
In thesis
1. Group 11–14 Triazenides: Synthesis, characterization, and thermal evaluation for use in chemical vapor deposition
Open this publication in new window or tab >>Group 11–14 Triazenides: Synthesis, characterization, and thermal evaluation for use in chemical vapor deposition
2022 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Chemical vapor deposition (CVD) and atomic layer deposition (ALD) are corner-stone techniques for depositing thin films in semi-conductor manufacturing. To deposit semiconductor grade materials, these techniques rely on high-performance precursors. This thesis covers synthesis, characterization, and evaluation of 1,3-dialkyltriazenides of group 11–14 metals as precursors for CVD and ALD.  

Triazenides had previously not been used as precursors for ALD, nor any other CVD process. The gallium and indium triazenides were used for ALD of indium- and gallium nitride and yielded materials of superior quality over other precursors. The success of these precursors sparked subsequent investigation into triazenides of zinc, and the group 11- and 14 metals. These triazenides showed high volatility and thermal stability making them highly interesting as CVD and ALD precursors. 

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2022. p. 46
Series
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 2273
National Category
Inorganic Chemistry
Identifiers
urn:nbn:se:liu:diva-189910 (URN)10.3384/9789179295646 (DOI)9789179295639 (ISBN)9789179295646 (ISBN)
Public defence
2022-12-16, Planck, F-building, Campus Valla, Linköping, 09:15 (English)
Opponent
Supervisors
Available from: 2022-11-14 Created: 2022-11-14 Last updated: 2022-11-14Bibliographically approved

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Samii, RouzbehO´brien, Nathan

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